Unveiled in 1996 by InSoft Inc., CoolTalk was a multimedia software tool that let PC users view data displayed on a shared whiteboard, exchange real-time messages via a chat tool or speak with each other via a TCP/IP voice connection. The product worked with Microsoft Sound System-compatible audio boards and was available in a 14.4-kbit/s version or 28.8-kbit/s version. CoolTalk was later packaged with popular Web browsers of the time.[20] CoolTalk 14.4 and 28.8 sold for $49.95 and $69.95, respectively, in 1996.[11][21]
Your product may be a physical item, a piece of software or even a kind of service. Webinars allow you to give real-time demonstrations and presentations with various features to promote vividly to the audience. For example, ezTalks Webinar can help to show the product with ultra-high-definition video and crystal-clear audio quality. For another example, ezTalks helps to share your latest presentations, documents or video clips and get everyone on the same page flexibly. What's more, the real users' questions on the product can be answered online quickly and the webinar Polls & Survey function may drive you better know about market demand, which can build or improve the relationships between the seller and customers. This can definitely boost your product sales. More importantly, many customers may be willing to pay to attend the webinar after you can get more followers and establish yourself an as authority in your industry, as they believe they can receive exclusive content and educational materials. 
Depending on the technology being used, participants may speak and listen to audio over standard telephone lines or via computer microphones and speakers. Some products allow for use of a webcam to display participants, while others may require their own proprietary encoding or externally provided encoding of a video feed (for example, from a professional video camera connected via an IEEE 1394 interface) that is displayed in the session.

In 1992, InSoft Inc. launched Communique, a software-based Unix teleconferencing product for workstations that enabled video/audio/data conferencing. Communique supported as many as 10 users, and included revolutionary features such as application sharing, audio controls, text, graphics, and whiteboarding which allowed networked users to share and manipulate graphic objects and files using simple paint tools.[10][11]
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